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Table 4 Autoxidation mechanism of vegetable oil

From: Vegetable Oil-Based Nanolubricants in Machining: From Physicochemical Properties to Application

Initiation

RH→R·+H·

Propagation

R·+O2→ROO·

ROO·+RH→ROOH+R·

Branching

ROOH→RO·+·OH

RO·+RH+O2→ROH+ROO·

·OH+RH+O2→H2O+ROO·

Termination

ROO·+ROO·→ROOH+O2

ROO·+R·→ROOH

R·+R·→R-R

Peroxide decomposition

ROOH→various lower molecular weight compounds

Polymerization

ROOH→various higher molecular weight compounds